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Etched States GEORGE R. DU'VAL, OFASALEM, OREGON.

Letters Patent N 100,383, dated March 1, 1'870.

IMPROVEMENT 1N GANG-FLOWS.

The Schedule referred to in these Lettere Patent and making part of the same To all whom. it 'ma-y concern:

Be it known that I, Gnonon R. DUVAL, of Salem, in the county of Marion, and State of Oregon, have .invented a. new and useful Improvement in Gang- Plows; and I do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference being had tothe accompanying drawings forming part of this specification.

This invention relates to new and-useful improve ments in gang-plows, and consists in the method oi raising and lowering the plowlinm the ground, and in the construction and arrangement of parts as hereinafter more fully described.

In the accompanying plate of drawings- Figure l represents a side elevation ot' the machine.

Figure 2 is a top view.

ASimilar letters ot reference indicate corresponding parts. l

This machine rests on two wheels, A B, connected together by the crooked and sectional axle C.

D represents the beams.

E is the tongue.

F is an upright, fastened' to the beams. l

VThe axle i s fastened in the angle formed by the upright andthe beams, in such a manner that it turns as ou a journal.

When in an upright position, the piece Fis on a line with the arms oi the axle, and the plows, which are attached to the back partoi' the beams, are raised from the ground. i

When it is placed in the position seen in the drawing, the plows are in the ground.

'.lo thus raise and lower the plows, there is a circular foot-lever, G, confined in a stand, H, on the beams,

which turns'ion the pivot t.

J represents a chain, which is attached to the lever at the point k, from whence it passes down'in a groove in the lever, and under a pulley, which is supported by a stand on the back, end of the tongue.

From this pulley the chain passes under another pulley in the upright F, as seen at l, and is attached to a cross-piece or brake m.

This brake m is pivoted at one end to a. bar, n,- which is fastened to the axle.

At the other end it is confined by another bar, o,

ywhich is also fastened to the axle.

P is the drivers seat.

Now, by bearing on the lever G With'the foot, the driver can readily raise the angular portion of the axle to an upright position. This throws up the back end ot' thebeams, and raises the plows from the ground. Vhen thus raised,the lever G is held in position by means of .a dog, fr, which drops into'a. notch in the lever.

' lVben-intt-he field and ready for operation, the dog is detached-from the lever by a slight pressure of the foot, when the back end of thet-ongue drops, partially revolving the lever G, which loosens the chain.l 'lhe chain being loosened, the axle turns on its journal, the angular portions S S- drop down to a horizontal position, .as seen in the drawing, and the plows take the ground.

The brake m is drawn down on to the wheel by the cord, when the pulley, under which it passes, is properly placed-in the upright.

A spring may be used in combination with the brake, if desired, for assisting in the operation of braking. f

rlhe draught of the machine' is at the point T, beneath the tongue from the bolt u, which is adjustable laterally (with the tongue) by means ot' the slotted plate v, by which the front ends of the beams are con nected together.

The axle C is adjustable in the arms of the Wheels u', and is fastened in the arms by keys, or in any suit! bination with a gang-plow, arranged and operating.

substantially as described.

GEORGE R. DUVAL.

Witnesses:

H. CARPENTER, R. C. GEER. 

